Exploring Networks

What is the primary purpose of the Physical Layer in the OSI model?

• To transport bits across the network media

• To provide error detection

• To encrypt data for secure transmission

• To manage network traffic

Which layer is the Physical Layer in the OSI model?

• Layer 4

• Layer 3

• Layer 1

• Layer 2

What does a Network Interface Card (NIC) do?

• Routes data between networks

• Encrypts data packets

• Manages bandwidth

• Connects a device to the network

Which of the following is NOT a characteristic of the Physical Layer?

• Encodes frames

• Transports bits

• Manages IP addresses

• Accepts frames from the Data Link Layer

What is the unit of bandwidth measured in?

• Bytes per second

• Bits per second

• Packets per second

• Frames per second

Which type of cabling is known for being relatively inexpensive and easy to install?

• Copper cabling

• Coaxial cabling

• Wireless media

• Fiber-optic cabling

What is the main disadvantage of copper cabling?

• Low bandwidth

• High susceptibility to EMI

• Limited distance due to signal attenuation

• High cost

What does UTP stand for?

• Underground Twisted Pair

• Unshielded Twisted Pair

• Universal Twisted Pair

• Unified Twisted Pair

Which encoding method is mentioned in the text?

• Manchester encoding

• Binary encoding

• Hexadecimal encoding

• ASCII encoding

What is the primary advantage of fiber-optic cabling over copper cabling?

• Less weight

• Easier installation

• Higher bandwidth and longer distances

• Lower cost